Covestro Makrolon® SL sheet Polycarbonate

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Covestro Makrolon® SL sheet Polycarbonate
Categories:	Polymer; Thermoplastic; Polycarbonate (PC)
Material Notes:	UV resistant sign grade Makrolon® SL Sign Grade sheet is a polycarbonate product with an advanced UV resistance technology that promotes long lasting outdoor weathering performance. It features outstanding impact strength, excellent dimensional stability, high temperature resistance, and high clarity. This lightweight thermoformable sheet is also easy to fabricate and decorate. Makrolon SL is offered in clear, a wide range of standard sign colors, or can be custom matched to any color. The product, available in either sheet or reels, has a proven track record of outstanding performance in extreme environments and meets the UL 879 standard for electric sign components. A ten (10) year limited product warranty is available for both clear and colors for breakage resistance. Clear sheet is also covered for weathering resistance. Applications: Flat and formed sign faces and channel letters Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	1.20 g/cc	ASTM D792
Water Absorption	0.15 % @Time 86400 sec	ASTM D570

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	70	ASTM D785
Hardness, Rockwell R	118	ASTM D785
Tensile Strength, Ultimate	65.5 MPa	ASTM D638
Tensile Strength, Yield	62.1 MPa	ASTM D638
Elongation at Break	110 %	ASTM D638
Tensile Modulus	2340 MPa	ASTM D638
Flexural Strength	93.1 MPa	ASTM D790
Flexural Modulus	2380 MPa	ASTM D790
Compressive Strength	86.2 MPa	ASTM D695
Compressive Modulus	345000 psi	ASTM D695
Poissons Ratio	0.38	ASTM E132
Shear Modulus	114 ksi	ASTM D732
Shear Strength	6.00 ksi	Yield; ASTM D732
	10.0 ksi	Break; ASTM D732
Izod Impact, Notched	18.0 ft-lb/in @Thickness 3.17 mm	ASTM D256
Izod Impact, Unnotched	60.0 ft-lb/in @Thickness 3.17 mm	no failure; ASTM D256
Impact Test	>= 47.0 ft-lb @Thickness 3.17 mm	ASTM D3763

Electrical Properties	Original Value	Comments
Volume Resistivity	8.20e+16 ohm-cm	ASTM D257
Dielectric Constant	2.96 @Frequency 10 Hz	ASTM D 150
	3.17 @Frequency 60 Hz	ASTM D 150
Dielectric Strength	15.0 kV/mm @Thickness 3.17 mm	ASTM D149
Dissipation Factor	0.00090 @Frequency 60 Hz	ASTM D150
Arc Resistance	10 sec	Stainless Steel Strip Electrode; ASTM D495
	120 sec	Tungsten Electrodes; ASTM D495

Thermal Properties	Original Value	Comments
CTE, linear	37.5 µin/in-°F	ASTM D696
Thermal Conductivity	1.35 BTU-in/hr-ft²-°F	ASTM C177
Deflection Temperature at 0.46 MPa (66 psi)	142 °C	ASTM D648
Deflection Temperature at 1.8 MPa (264 psi)	132 °C	ASTM D648
Brittleness Temperature	200 °F	ASTM D746
Flammability, UL94	HB @Thickness 1.52 mm

Optical Properties	Original Value	Comments
Refractive Index	1.586	ASTM D542
Transmission, Visible	27 % @Thickness 3.00 mm	B59 Whtie; ASTM D1003
	27 % @Thickness 3.81 mm	B54 White; ASTM D1003
	27 % @Thickness 4.50 mm	B54 White; ASTM D1003
	86 % @Thickness 3.00 mm	Clear; ASTM D1003

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PCOVEST0856 / 202639

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